Game Drop Bug With Skill Combo

On occasion, the Skill Combination of having wrath of the berserker on, whirl-winding to a target then using rend seems to cause me to drop out of the game. This only started happening when I added Wrath of the Berserker into my build.

It's happened to me three times today and I have only played for a little under two hours. It's terribly annoying because I usually play solo.